IT8467285A1 - BIDIRECTIONAL TRANSMISSION SYSTEM WITH ECHO CANCELLATION. - Google Patents

BIDIRECTIONAL TRANSMISSION SYSTEM WITH ECHO CANCELLATION.

Info

Publication number
IT8467285A1
IT8467285A1 IT1984A67285A IT6728584A IT8467285A1 IT 8467285 A1 IT8467285 A1 IT 8467285A1 IT 1984A67285 A IT1984A67285 A IT 1984A67285A IT 6728584 A IT6728584 A IT 6728584A IT 8467285 A1 IT8467285 A1 IT 8467285A1
Authority
IT
Italy
Prior art keywords
transmission system
echo cancellation
bidirectional transmission
bidirectional
echo
Prior art date
Application number
IT1984A67285A
Other languages
Italian (it)
Other versions
IT8467285A0 (en
IT1178913B (en
Original Assignee
Cselt Centro Studi E Laboratori Telecomunicazioni S P A
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cselt Centro Studi E Laboratori Telecomunicazioni S P A filed Critical Cselt Centro Studi E Laboratori Telecomunicazioni S P A
Priority to IT67285/84A priority Critical patent/IT1178913B/en
Publication of IT8467285A0 publication Critical patent/IT8467285A0/en
Priority to JP60054764A priority patent/JPS60214639A/en
Priority to US06/714,708 priority patent/US4686703A/en
Priority to CA000477428A priority patent/CA1238382A/en
Priority to EP85103513A priority patent/EP0156348B1/en
Priority to DE8585103513T priority patent/DE3578794D1/en
Priority to DE198585103513T priority patent/DE156348T1/en
Publication of IT8467285A1 publication Critical patent/IT8467285A1/en
Application granted granted Critical
Publication of IT1178913B publication Critical patent/IT1178913B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1423—Two-way operation using the same type of signal, i.e. duplex for simultaneous baseband signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
    • H04B3/235—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers combined with adaptive equaliser

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Bidirectional Digital Transmission (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Telephonic Communication Services (AREA)
IT67285/84A 1984-03-26 1984-03-26 ZIONAL TWO-WIRE TRANSMISSION SYSTEM WITH D ECHO CANCELLATION IT1178913B (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
IT67285/84A IT1178913B (en) 1984-03-26 1984-03-26 ZIONAL TWO-WIRE TRANSMISSION SYSTEM WITH D ECHO CANCELLATION
JP60054764A JPS60214639A (en) 1984-03-26 1985-03-20 Bidirectional digital transmission system by echo cancel
US06/714,708 US4686703A (en) 1984-03-26 1985-03-21 System for bidirectional digital transmission with echo cancellation
CA000477428A CA1238382A (en) 1984-03-26 1985-03-25 System for bidirectional digital transmission with echo-cancellation
EP85103513A EP0156348B1 (en) 1984-03-26 1985-03-25 Digital bidirectional transmission system with echo-cancellation
DE8585103513T DE3578794D1 (en) 1984-03-26 1985-03-25 DIGITAL TWO-WAY TRANSMISSION SYSTEM WITH ECHO COMPENSATOR.
DE198585103513T DE156348T1 (en) 1984-03-26 1985-03-25 DIGITAL TWO-WAY TRANSMISSION SYSTEM WITH ECHO COMPENSATOR.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT67285/84A IT1178913B (en) 1984-03-26 1984-03-26 ZIONAL TWO-WIRE TRANSMISSION SYSTEM WITH D ECHO CANCELLATION

Publications (3)

Publication Number Publication Date
IT8467285A0 IT8467285A0 (en) 1984-03-26
IT8467285A1 true IT8467285A1 (en) 1985-09-26
IT1178913B IT1178913B (en) 1987-09-16

Family

ID=11301142

Family Applications (1)

Application Number Title Priority Date Filing Date
IT67285/84A IT1178913B (en) 1984-03-26 1984-03-26 ZIONAL TWO-WIRE TRANSMISSION SYSTEM WITH D ECHO CANCELLATION

Country Status (6)

Country Link
US (1) US4686703A (en)
EP (1) EP0156348B1 (en)
JP (1) JPS60214639A (en)
CA (1) CA1238382A (en)
DE (2) DE156348T1 (en)
IT (1) IT1178913B (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1246174A (en) * 1984-09-26 1988-12-06 Misao Fukuda Digital transmission system
JPS62203435A (en) * 1986-03-03 1987-09-08 Seiko Instr & Electronics Ltd Two-directional optical communication equipment on single transmission line
EP0239293A3 (en) * 1986-03-24 1988-12-14 Gpt Limited Data transmission systems
DE3782995D1 (en) * 1986-09-22 1993-01-21 Siemens Ag METHOD AND CIRCUIT ARRANGEMENT FOR SYNCHRONIZING A CLOCK GENERATOR.
SE461367B (en) * 1989-02-10 1990-02-05 Nokia Data Systems POST ARRANGEMENTS FOR DATA TRANSFER
US5757654A (en) * 1993-12-29 1998-05-26 International Business Machines Corp. Reflective wave compensation on high speed processor cards
US5544047A (en) * 1993-12-29 1996-08-06 International Business Machines Corporation Reflective wave compensation on high speed processor cards
US5500892A (en) * 1994-02-14 1996-03-19 Brooktree Corporation Echo canceller
US5790632A (en) * 1994-09-30 1998-08-04 Qualcom Incorporated Method and apparatus for echo canceling accounting for companding induced quantization error
US5920548A (en) * 1996-10-01 1999-07-06 Telefonaktiebolaget L M Ericsson Echo path delay estimation
JP3717363B2 (en) * 2000-03-07 2005-11-16 富士通株式会社 xDSL transceiver
US20070169152A1 (en) * 2005-12-30 2007-07-19 Daniel Roodnick Data and wireless frame alignment for error reduction
US11070409B2 (en) 2019-09-27 2021-07-20 Axonne, Inc. Wired communication system including asymmetrical physical layer devices
US11855817B2 (en) * 2019-09-27 2023-12-26 Axonne, Inc. Wired communication system including asymmetrical physical layer devices

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1108415A (en) * 1966-05-06 1968-04-03 Int Standard Electric Corp Echo suppression in long distance telephone circuits
SE416367B (en) * 1976-09-07 1980-12-15 Western Electric Co EKOELIMINERINGSANORDNING
US4394767A (en) * 1981-07-07 1983-07-19 General Datacomm Industries, Inc. Data transmission over long distance circuits
SE426764B (en) * 1981-11-02 1983-02-07 Ellemtel Utvecklings Ab PROCEDURE TO ACCEPT ADAPTIVE ECO-ELIMINATION BY TRANSFER OF DIGITAL INFORMATION IN DUPLEX EQUIPMENT FOR CARRYING OUT THE PROCEDURE
GB2111354B (en) * 1981-11-19 1985-06-19 Standard Telephones Cables Ltd Echo canceller
JPS601947A (en) * 1983-06-17 1985-01-08 Nec Corp Two-wire full duplex communication system
CA1246174A (en) * 1984-09-26 1988-12-06 Misao Fukuda Digital transmission system

Also Published As

Publication number Publication date
IT8467285A0 (en) 1984-03-26
CA1238382A (en) 1988-06-21
DE156348T1 (en) 1988-04-07
EP0156348A2 (en) 1985-10-02
EP0156348B1 (en) 1990-07-25
US4686703A (en) 1987-08-11
IT1178913B (en) 1987-09-16
JPH0262976B2 (en) 1990-12-27
EP0156348A3 (en) 1987-09-02
DE3578794D1 (en) 1990-08-30
JPS60214639A (en) 1985-10-26

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19950329